Monitoring Ternary Systems of C12E5/Water/Tetradecane via the Fluorescence of Solvatochromic Probes
Autor(a) principal: | |
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Data de Publicação: | 2002 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/10395 https://doi.org/10.1021/jp013047v |
Resumo: | In this work ternary systems of the nonionic surfactant C12E5 (C12H25(OCH2CH2)5OH), tetradecane, and water were probed by the use of steady state and time-resolved fluorescence. Microemulsions, which were rich in oil, rich in water, and also both continuous in oil and water, were monitored via the application of solvatochromic fluorescent probes. The hydrophobic laser dye Nile Red was used to report from the side of the oil−surfactant interface, while Prodan, which is soluble in each of the constituent solvents, was used to provide a global picture. To complement these, the hydrophilic dye 4-(2-(dimethylamino)phenyl)-1-methylpyridinium iodide was used to report from the side of the water−surfactant interface. The results show the partitioning of the probes into different environments within the ternary systems as evident from the solvatochromic shift in the emission spectra, uncovering similarities between the water-rich and bicontinuous regions in terms of polarity. Estimates for the polarity of the environments in which the fluorophores are solubilized are made in terms of the ET(30) parameter scale. The time-resolved kinetics of some of the probes have been found to be viscosity dependent, which brought out similarities between the bicontinuous and oil-rich regions along with the observation of the effect of solvent relaxation in these ternary systems. |
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Monitoring Ternary Systems of C12E5/Water/Tetradecane via the Fluorescence of Solvatochromic ProbesIn this work ternary systems of the nonionic surfactant C12E5 (C12H25(OCH2CH2)5OH), tetradecane, and water were probed by the use of steady state and time-resolved fluorescence. Microemulsions, which were rich in oil, rich in water, and also both continuous in oil and water, were monitored via the application of solvatochromic fluorescent probes. The hydrophobic laser dye Nile Red was used to report from the side of the oil−surfactant interface, while Prodan, which is soluble in each of the constituent solvents, was used to provide a global picture. To complement these, the hydrophilic dye 4-(2-(dimethylamino)phenyl)-1-methylpyridinium iodide was used to report from the side of the water−surfactant interface. The results show the partitioning of the probes into different environments within the ternary systems as evident from the solvatochromic shift in the emission spectra, uncovering similarities between the water-rich and bicontinuous regions in terms of polarity. Estimates for the polarity of the environments in which the fluorophores are solubilized are made in terms of the ET(30) parameter scale. The time-resolved kinetics of some of the probes have been found to be viscosity dependent, which brought out similarities between the bicontinuous and oil-rich regions along with the observation of the effect of solvent relaxation in these ternary systems.American Chemical Society2002-04-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/10395http://hdl.handle.net/10316/10395https://doi.org/10.1021/jp013047vengThe Journal of Physical Chemistry B. 106:16 (2002) 4061-40691520-6106Hungerford, GrahamCastanheira, Elisabete M. S.Oliveira, M. Elisabete C. D. RealMiguel, M. da GraçaBurrows, Hugh D.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2020-02-11T18:17:36Zoai:estudogeral.uc.pt:10316/10395Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:01:28.094596Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Monitoring Ternary Systems of C12E5/Water/Tetradecane via the Fluorescence of Solvatochromic Probes |
title |
Monitoring Ternary Systems of C12E5/Water/Tetradecane via the Fluorescence of Solvatochromic Probes |
spellingShingle |
Monitoring Ternary Systems of C12E5/Water/Tetradecane via the Fluorescence of Solvatochromic Probes Hungerford, Graham |
title_short |
Monitoring Ternary Systems of C12E5/Water/Tetradecane via the Fluorescence of Solvatochromic Probes |
title_full |
Monitoring Ternary Systems of C12E5/Water/Tetradecane via the Fluorescence of Solvatochromic Probes |
title_fullStr |
Monitoring Ternary Systems of C12E5/Water/Tetradecane via the Fluorescence of Solvatochromic Probes |
title_full_unstemmed |
Monitoring Ternary Systems of C12E5/Water/Tetradecane via the Fluorescence of Solvatochromic Probes |
title_sort |
Monitoring Ternary Systems of C12E5/Water/Tetradecane via the Fluorescence of Solvatochromic Probes |
author |
Hungerford, Graham |
author_facet |
Hungerford, Graham Castanheira, Elisabete M. S. Oliveira, M. Elisabete C. D. Real Miguel, M. da Graça Burrows, Hugh D. |
author_role |
author |
author2 |
Castanheira, Elisabete M. S. Oliveira, M. Elisabete C. D. Real Miguel, M. da Graça Burrows, Hugh D. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Hungerford, Graham Castanheira, Elisabete M. S. Oliveira, M. Elisabete C. D. Real Miguel, M. da Graça Burrows, Hugh D. |
description |
In this work ternary systems of the nonionic surfactant C12E5 (C12H25(OCH2CH2)5OH), tetradecane, and water were probed by the use of steady state and time-resolved fluorescence. Microemulsions, which were rich in oil, rich in water, and also both continuous in oil and water, were monitored via the application of solvatochromic fluorescent probes. The hydrophobic laser dye Nile Red was used to report from the side of the oil−surfactant interface, while Prodan, which is soluble in each of the constituent solvents, was used to provide a global picture. To complement these, the hydrophilic dye 4-(2-(dimethylamino)phenyl)-1-methylpyridinium iodide was used to report from the side of the water−surfactant interface. The results show the partitioning of the probes into different environments within the ternary systems as evident from the solvatochromic shift in the emission spectra, uncovering similarities between the water-rich and bicontinuous regions in terms of polarity. Estimates for the polarity of the environments in which the fluorophores are solubilized are made in terms of the ET(30) parameter scale. The time-resolved kinetics of some of the probes have been found to be viscosity dependent, which brought out similarities between the bicontinuous and oil-rich regions along with the observation of the effect of solvent relaxation in these ternary systems. |
publishDate |
2002 |
dc.date.none.fl_str_mv |
2002-04-15 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/10395 http://hdl.handle.net/10316/10395 https://doi.org/10.1021/jp013047v |
url |
http://hdl.handle.net/10316/10395 https://doi.org/10.1021/jp013047v |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
The Journal of Physical Chemistry B. 106:16 (2002) 4061-4069 1520-6106 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
American Chemical Society |
publisher.none.fl_str_mv |
American Chemical Society |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799133906227691520 |